Water-filter.



T. H. 61 B. H. T. MULCH.

WATER FILTER.

APPLICAHON FILED MAY 29, 1913.

Patented June 15, 1915.

INVENTORS 7715000515 H. ll/ll/LCH 3-H. THEODORE Ml/L CH ATTORNEYS THE NORRIS PETERS c0 PHOT0-LITHO.. WASHINGTON. D. cv

ATENT FFTQE.

THEODORE H. MULCH AND BALTHASER H. THEODORE MULOI-I, OF

NEW YORK, N. Y.

WATER-FILTER.

Specification of Letters Patent.

Patented June 15, 191.5.

Application filed] May 29, 1913. Serial No. 770,603.

To all whom it may concern Be it known that we THEODORE H. MULGH and BALTHASER H. THEODORE MULoI-r, citi- Zens of the United States, and residents of the borough and county of Bronx, city and State of New York, have invented certain new and useful Improvements in Water- Filters, of which the following is a specification.

Our invention relates more particularly to what are usually called stone filters in which some form of porous stone or the like is used as the filtering medium.

The object of our invention is to so simplify the construction and installation of the filter that the filter stone may be readily removed for cleaning'and replaced without the use of tools or the assistance of a plumber. We accomplish this result by securing the filter stone to a specially constructed removable head which may be readily clamped in place in the filter casing in such a manner as to seal the same and permit the immediate use ofthe filter. The water pipe connections, being made through the filter casing, do not need to be disturbed other than to turn off the water by means of an ordinary valve before removing the filter stone and then turn it on again when the same is re placed and the head clamped in place.

One form of our invention is illustrated in the accompanying drawings of which- Figure l is a longitudinal cross-section and Fig. 2 is a view of the head end with parts of the head broken away.

Referring to the drawings 1 represents the filter casing provided with a suitable inlet opening 2 screw threaded to receive the water pipe 3. The casing 1 is preferably cylindrical in form with one end permanently closed, while the other end is adapted to be closed by a sealing head 4. The annular open end of the casing wall is thickened at 5 and the outer face thereof is provided with three annular grooves the middle one 6 being preferably deeper and adapted to serve as a water channel while the inner and outer rings are fitted with packing rings 7 and 8 respectively. At any suitable point the thickened head-end 5 of the casing is provided with a hole 9, bored at an angle or otherwise adaptedto communicate with the annular channel 6, substantially as indicated in Fig. 1 of the drawings. The opening 9 is screw threaded to receive the water pipe 10 and is adapted to serve as an outlet for the filtered water. The lid or head 4 is made hollow as indicated or otherwise provided a channel adapted to connect with the annular channel 6 which is sealed and made continuous bytwo annular ribs 11 and 12 projecting from the under side of the head 4. In the present instance the cavity 13 in the head 4 communicates with the sealed channel 6 through holes 14 which are located between the annular ribs 11 and 12 and pass through the diaphragm-like under side 4 of the head. The under plate 4 of the head is also provided with a central opening 15 which is adapted to connect the channel 13, 14, 6, 9 with the hollow interior 16 of the cylindrical filter stone 17. A rod or bolt 18 passes through the opening 15 and is threaded into or otherwise secured to the head 4 at 19. The other end of the rod 18 is also threaded and fitted with a nut '20 whereby the filter stone may be clamped securely to the under side of the head 4. A packing washer 21 is inserted between the annular body of the filter stone 1.7 and the under side 4 of the head in order to insure a water tight joint. Another packing washer 22 is clamped over the end of the tubular cavity 16 by means of the nut 20 and an intervening metal or other washer 23. The nut 20 and the rod 18 are adapted thereby to clamp the filter stone 17 to the head and thus form two separate chambers, one between the filter stone 17 and the casing 1 adapted to receive unfiltered water through the inlet opening 2 and the other the interior chamber 16 in which the filtered water is collected after being forced through the intervening cylindrical body of the filter stone. The filter stone and the head are thus secured together as a unitary structure and may be readily removed or secured in place. For this purpose the thickened rim 5 of the outer casing 1 is provided with oppositely disposed lugs or ears 24 and 25 extending above or beyond the lid or head 4. A clamping bar 26 is pivotally secured to one of the ears 24 by a screw 27 or otherwise so as to permit the bar 26 to be swung out of the way when removing the filter stone for cleaning or other purpose. The upper end of the car 25 is provided with a hook 25 under which one end of the bar 26 is placed when clamping in the casing. The bar :26 at its middle is provided with a winged clamping bolt 28, the lower end of which against the lid or head 4; as indicated in the drawings.

The operation of the filter can be readily understood. The water to be filtered enters from the pipe 3 and after being forced through the filter stone 17 enters the interior chamber 16 thereof and may be drawn ofi through the pipe 10, the water from 16 passing through the hole 15 into the channel 18, and from the channel 13 through the holes 14: into the annular channel 6 which, as explained, is tapped at 9 by the pipe 10.

The water inlet and outlet pipes 3 and 10 both being secured in the casing 1, it will be seen that these connections need not be disturbed when the filter stone is removed for cleaning thus permitting the filter to be connected up permanently in the piping circuit.

The filter stone may be readily removed at will by loosening the wing screw 28 an swinging the bar 26 out from under the hook 25 and simply drawing the stone out of the casing by means of the head 4:.

Various modifications in the structural arrangement may be made without departing from the spirit and scope of the claims.

We claim:

1. In a water filter, the combination of an open ended casing provided with inlet and outlet openings, the open end of said casing being provided with an annular channel communicating with said outlet opening, annular gaskets on each side of said annular channel, a head for closing the open end of said casing provided with annular ribs adapted to cooperate with said gaskets to complete said annular channel said head being provided with an interior channel communicating with said annular channel, a hollow filter stone having communication with the channel in said head, means for securing the filter stone to said head and is adapted to be screwed V as filtered Water' means for removably securing said head to said casing.

2. In a water filter, the combination of an open ended casing having a thickened edge at the open end provided with an annular channel, an inlet pipe connected near the bottom of the casing, an outlet pipe connected with theupper thickened edge and adapted to communicate with said annular channel, annular gaskets on each side of said channel, a cover for said casing provided with annular ribs adapted to cooperate with said gaskets said cover being provided with a cavity communicating with the channel between said annular ribs and a filter stone provided with a central opening communicating with the cavity in said cover whereby the interior of said stone isin communication with said outlet pipe.

3. In a water filter, the combinationv of an open ended casing having a thickened edge at the open end provided with an annular channel, an inlet pipe connected near the bottom of the casing, an outlet pipe connected with the upper thickened edge and adapted to communicate with said annular channel, annular gaskets on each side of said channel, a cover for said casing provided with annular ribs adapted to cooperate with said gaskets said cover being provided with a cavity communicating with the channel between said annular ribs, a filter stone provided with a central opening communicating with the cavity in said cover whereby the interior of said stone is in communication with said outlet pipe, means for securing the stone to said cover and means for securing the cover to said casing.

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

THEODORE H. MULOH. B. H. THEODORE MULOH.

Witnesses:

M. H; LooKwooD, FRED A. KLEIN.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioncr of Patents,

' Washington, D. G. 

